Infringement, but you have to prove it. First, your paper was published earlier than time; Second, you should have the original or copy of the tenth issue of Journal of Nanyang Normal University; Third, you have to prove that you only got the news in 2008 and provide witness testimony, otherwise it will be beyond the limitation of prosecution.

When all the evidence is collected, you can talk to the teacher directly. If he (she) has a good attitude towards admitting mistakes, I suggest you make an exception.